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Encoding device, encoding method, encoding method program, decoding device, decoding method, decoding method program

Inactive Publication Date: 2005-01-13
MITSUBISHI GAS CHEM CO INC +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention has been made in view of the foregoing, and is intended to provide an encoding device, an encoding method, an encoding program, a decoding device, a decoding method, and a decoding program with improved performance over the related art.
According to the structure of the present invention, therefore, a decoding program with improved performance over the related art is provided.

Problems solved by technology

However, such SCCC and SCTCM systems have a problem in that there is a large difference between the logical limit and the actual performance, and therefore, there is still room for improvement in the performance.

Method used

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  • Encoding device, encoding method, encoding method program, decoding device, decoding method, decoding method program
  • Encoding device, encoding method, encoding method program, decoding device, decoding method, decoding method program

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second embodiment

(2) Second Embodiment

FIG. 27 is a block diagram of an encoding device in a data transmitting and receiving system according to a second embodiment of the present invention. In the data transmitting and receiving system, an encoding device 202 performs serial concatenated convolutional coding on digital information D201 according to the SCCC scheme, and transmits the coded output D204 to a receiver via a noisy memoryless channel, and then a decoding device in the receiver decodes the transmitted output.

In the encoding device 202, the digital information D101 is convolutional coded with code rate k / p by an outer-code convolutional encoder 205, which serves as first encoding means, and the output data D205 is then interleaved by an interleaver 206. The resulting data is further convolutional coded with code rate p / n by an inner-code convolutional encoder 207, which serves as second encoding means, and is then output to the memoryless channel. Thus, finally, the encoding device 202 pe...

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Abstract

The present invention is particularly applied to serial concatenated coding and serial concatenated trellis coded modulation. In second encoding 107, which is inner coding, a sequence that is not encoded or that is encoded so as to produce a finite impulse response and a sequence that is encoded so as to produce an infinite impulse response are output. In interleaving 106 before the second encoding 107, the sequences are permuted so as not to be mixed with each other.

Description

BACKGROUND OF THE INVENTION 1. Technical Field The present invention relates to an encoding device, an encoding method, an encoding program, a decoding device, a decoding method, and a decoding program. In particular, the present invention is applicable to serial concatenated coding and serial concatenated trellis coded modulation. In the present invention, in second coding, which is inner coding, a sequence that is not coded or that is coded so as to produce a finite impulse response and a sequence that is coded so as to produce an infinite impulse response are output, and, in interleaving before the second encoding, the sequences are permuted so as not to be mixed with each other, thus improving the performance over the related art. 2. Background Art With the recent research and development in the communication field including mobile communications and deep space communications, the broadcasting field including terrestrial digital broadcasting and satellite digital broadcastin...

Claims

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Application Information

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IPC IPC(8): G06F11/10H03M13/23H03M13/25H03M13/27H03M13/29H04L1/00
CPCH03M13/25H03M13/258H03M13/27H03M13/29H04L1/0071H04L1/0055H04L1/006H04L1/0065H03M13/2972H03M13/23
Inventor YOKOKAWA, TAKASHIMIYAUCHI, TOSHIYUKIIIDA, YASUHIROYAMAMOTO, KOHEIHATTORI, MASAYUKI
Owner MITSUBISHI GAS CHEM CO INC
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